<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>记事本</title>
</head>
<body>
<!-- 主体区域 -->
<section id="todoapp">
    <!-- 输入框 -->
    <header class="header">
        <h1>小黑记事本</h1>
        <input v-model="inputValue" @keyup.enter="add" autofocus="autofocus" autocomplete="off" placeholder="请输入任务"
               class="new-todo" />
    </header>
    <!-- 列表区域 -->
    <section class="main">
        <ul class="todo-list">
            <li class="todo" v-for="(item,index) in list">
                <div class="view">
                    <span class="index">{{ index+1 }}.</span>
                    <label>{{ item }}</label>
                    <button class="destroy" @click="remove(index)"></button>
                </div>
            </li>
        </ul>
    </section>
    <!-- 统计和清空 -->
    <footer class="footer" v-show="list.length!=0">
      <span class="todo-count" v-if="list.length!=0">
        <strong>{{ list.length }}</strong> items left
      </span>
        <button v-show="list.length!=0" class="clear-completed" @click="clear">
            Clear
        </button>
    </footer>
</section>
<!-- 底部 -->
<footer class="info">
    <p>
        <a href="http://www.itheima.com/"><img src="./img/black.png" alt="" /></a>
    </p>
</footer>
<!-- 开发环境版本，包含了有帮助的命令行警告 -->
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>
    var app = new Vue({
        el: "#todoapp",
        data: {
            list: ["写代码", "吃饭饭", "睡觉觉"],
            inputValue: "好好学习,天天向上"
        },
        methods: {
            add: function () {
                this.list.push(this.inputValue);
            },
            remove: function (index) {
                console.log("删除");
                console.log(index);
                this.list.splice(index, 1);
            },
            clear: function () {
                this.list = [];
            }
        },
    })
</script>
</body>

</html>